-58.69% is the change from 857 to 354
Calculation steps:
[( 354 - 857 ) ÷ 857] x 100 = -58.69%
Formula
Percentage change = [(354 - 857) / 857] x 100
Subtract the new number by the original number
354 - 857 = -503
-503 ÷ 857 = -0.5869311551925321
-0.5869311551925321 x 100 = -58.69%